Question: What battle where Japanese armies attempted to destroy the Allied forces at Imphal and invade India ended on 22 June when British and Indian troops from Kohima and Imphal met at Milestone 109 during the turning point of the Japanese U Go offensive into India in 1944?

Context paragraphs:
Battle of Kohima: The Battle of Kohima was the turning point of the Japanese U Go offensive into India in 1944 during the Second World War.  The battle was fought in three stages from 4 April to 22 June 1944 around the town of Kohima in Nagaland in northeast India.  From 3 to 16 April, the Japanese attempted to capture Kohima ridge, a feature which dominated the road by which the besieged British and Indian troops of IV Corps at Imphal were supplied.  By mid-April, the small British and Indian force at Kohima was relieved.  From 18 April to 13 May, British and Indian reinforcements counter-attacked to drive the Japanese from the positions they had captured.  The Japanese abandoned the ridge at this point but continued to block the Kohima–Imphal road.  From 16 May to 22 June, the British and Indian troops pursued the retreating Japanese and reopened the road.  The battle ended on 22 June when British and Indian troops from Kohima and Imphal met at Milestone 109, ending the Siege of Imphal.

Battle of Imphal: The Battle of Imphal took place in the region around the city of Imphal, the capital of the state of Manipur in northeast India from March until July 1944.  Japanese armies attempted to destroy the Allied forces at Imphal and invade India, but were driven back into Burma with heavy losses.  Together with the simultaneous Battle of Kohima on the road by which the encircled Allied forces at Imphal were relieved, the battle was the turning point of the Burma Campaign, part of the South-East Asian Theatre of the Second World War.  The defeat at Kohima and Imphal was the largest defeat to that date in Japanese history.

Indian National Army: The Indian National Army (INA; "Azad Hind Fauj" ; "lit." : Free Indian Army) was an armed force formed by Indian nationalists in 1942 in Southeast Asia during World War II.  Its aim was to secure Indian independence from British rule.  It formed an alliance with Imperial Japan in the latter's campaign in the Southeast Asian theatre of WWII.  The army was first formed in 1942 under Mohan Singh, by Indian PoWs of the British-Indian Army captured by Japan in the Malayan campaign and at Singapore.  This first INA collapsed and was disbanded in December that year after differences between the INA leadership and the Japanese military over its role in Japan's war in Asia.  It was revived under the leadership of Subhas Chandra Bose after his arrival in Southeast Asia in 1943.  The army was declared to be the army of Bose's "Arzi Hukumat-e-Azad Hind" (the Provisional Government of Free India).  Under Bose's leadership, the INA drew ex-prisoners and thousands of civilian volunteers from the Indian expatriate population in Malaya (present-day Malaysia) and Burma.  This second INA fought along with the Imperial Japanese Army against the British and Commonwealth forces in the campaigns in Burma, in Imphal and at Kohima, and later against the successful Burma Campaign of the Allies.

Operation U-Go: The U Go offensive, or Operation C (ウ号作戦), was the Japanese offensive launched in March 1944 against forces of the British Empire in the northeast Indian regions of Manipur and the Naga Hills (then administered as part of Assam).  Aimed at the Brahmaputra valley, through the two towns of Imphal and Kohima, the offensive along with the overlapping Ha Go offensive was one of the last major Japanese offensives during the Second World War.  The offensive culminated in the Battles of Imphal and Kohima, where the Japanese and their allies were first held and then pushed back.

Operation Capital: During World War II, Operation Capital, Operation "Y", was a broad British offensive launched from Assam, India across the Chindwin River into northeast Burma near Mandalay, launched on 19 November 1944.  The objectives were to clear Japanese forces from northern Burma, reopen the Burma Road supply route to China and tie down Japanese forces to prevent their transfer to the Pacific theatre.  The British Fourteenth Army struck the Japanese Fifteenth Army near Imphal and Kohima.  The Japanese were forced to pull back to a line from Indaw to Mandalay, vacating most of Burma.

100th Indian Infantry Brigade: The 100th Indian Infantry Brigade was an infantry brigade formation of the Indian Army during World War II.  It was formed in April 1920 at Jhansi.  The brigade was assigned to the 34th Indian Infantry Division until June 1943, when it was transferred to the 20th Indian Infantry Division until the end of the war.  It was known for its participation in Battle of Imphal or known as "Imphal Campaign" where it fought along with other Indian Infantry regiments converged to form the 20th Indian Division and drove back the Japanese Army back to Burma inflicting heavy losses.  This was a turning point in the Burma Campaign, part of South-East Asian theatre of World War II.

Indian National Army in Singapore: Between 1942 and 1945, the INA was involved in various military operations fighting alongside the Japanese forces and against the British and Allied forces.  They are notable for their contributions to the battle fought in Burma, Imphal and Kohima.

Azad Hind Dal: The Azad Hind Dal was a branch of the Indian Independence League that was formed during World War II to take administrative control of the Indian territories to fall to the Indian National Army starting with the latter's Imphal campaign.  The branch was created by Subhas Chandra Bose to replace the Indian Civil Service in areas of British India, and is also thought to have been the nascent concept of a one-party political, bureaucractic and civil administrative system similar to that of the Soviet Union or the Fascist states of the time.  During the brief period that Azad Hind was in possession of small Indian territories around Imphal and Kohima during the U Go offensive between April and May 1944, parties of the Azad Hind Dal were sent along with the INA contingents to take administrative charge and rehabilitation of these areas.

Imphal River: The Imphal River is a major river in Manipur state, northeastern India which originates in Senapati District at the hills oF Karong.  It is a tributary of the Manipur River, joining it in Thoubal district.  It flows past Loktak Lake and the city of Imphal and joins the Lilong River, some 10 km to the south.  It flows to Myanmar (Burma), where it is known as the Manipura River.  It then reaches the Indian Ocean, thereby connecting Imphal city to the Indian Ocean.  Imphal River was used by Japanese soldiers in boats to reach Imphal in World War II.

The Springing Tiger: The Springing Tiger is a historical account of the Indian National Army published in 1959 by Col Hugh Toye.  The book was published in London by Cassell Publishers, and is considered one of the first Sympathetic Western accounts of the army.  Toye worked as an intelligence officer in World War II in Burma, and was tasked with interrogating captured soldiers of the INA by the CSDIC(I).  The book is provided with a foreword by Phillip Mason, who in 1946 was the Secretary of the War department in India.  The book describes in detail the formation of the INA under the auspices of the F Kikan of Japanese intelligence through the collapse and subsequent revival of the army under Subhas Chandra Bose, its role in the Battles of Imphal and Kohima and the subsequent collapse in the face of Allied Burmese offensive before ending with the death of Subhas Chandra Bose.

Supporting paragraphs: Battle of Kohima Battle of Imphal
Answer: Battle of Imphal