Question: What month did General cook resume his campaign in the battle that took place near Busby, Montana?

Context paragraphs:
Battle of Albelda (851): The first Battle of Albelda took place near Albelda in 851 between the Muslim forces of Musa ibn Musa, chief of the Banu Qasi and governor of Tudela on behalf of the Emirate of Córdoba, and an army of the Franks and Gascons from France, probably allies of the Christian Kingdom of Asturias, inveterate enemy of Musa.  The Muslims, who were probably the aggressors, were victorious.  The battle is usually connected with a campaign of Ordoño I of Asturias to suppress a Basque revolt, and may be related also to the capture of certain Frankish and Gascon leaders.  In the past it has been conflated with the Battle of Monte Laturce, also near Albelda, which occurred in 859 or 860.

Second Battle of El Alamein: The Second Battle of El Alamein (23 October–11 November 1942) was a decisive battle of the Second World War that took place near the Egyptian railway halt of El Alamein.  With the Allies victorious, it marked the watershed of the Western Desert Campaign.  The First Battle of El Alamein had prevented the Axis from advancing further into Egypt.  In August 1942, Lieutenant-General Sir Bernard Law Montgomery took command of the Eighth Army following the sacking of General Claude Auchinleck and the death of his replacement Lieutenant-General William Gott in a plane crash.

Battle of Borkowo: The Battle of Borkowo took place on August 14–15, 1920, during the Polish–Soviet War.  Polish Army's Siberian Brigade, commanded by Colonel Kazimierz Rumsza, clashed with Red Army's 11th and 16th Rifle Divisions (part of 5th Army under General August Kork).  Polish Siberian Brigade was supported by subunits of 9th and 18th Infantry Divisions.  The battle took place near the village of Borkowo, where Poles defended the Wkra river crossings.

Battle of the Rosebud: The Battle of the Rosebud (also known as the Battle of Rosebud Creek) occurred June 17, 1876, in the Montana Territory between the United States Army and its Crow and Shoshoni allies against a force consisting mostly of Lakota Sioux and Northern Cheyenne Indians during the Great Sioux War of 1876.  The Cheyenne called it the Battle Where the Girl Saved Her Brother, because of an incident during the fight involving Buffalo Calf Road Woman.  General George Crook's offensive was stymied by the Indians, led by Crazy Horse, and he awaited reinforcements before resuming the campaign in August.

Battle of Franklin's Crossing: The Battle of Franklin's Crossing, also known as the Deep Run Battle, took place near Fredericksburg, Virginia on June 5, 1863.  Union forces under General John Sedgwick skirmished with Confederate troops under General A.P. Hill during a reconnaissance to determine the movements and location of General Robert E. Lee's Army of Northern Virginia.  Confederate forces repulsed the Union probe.  The small fight was the first action in the Gettysburg Campaign.

Busby, Montana: Busby is a census-designated place (CDP) in Big Horn County, Montana, United States.  It is on the Northern Cheyenne reservation.  The population was 745 at the 2010 census.  The town is near the site of the Battle of the Rosebud and the associated Rosebud Battlefield State Park, where General George Custer forces encountered Sioux and Cheyenne forces led by Crazy Horse.

Battle of Boratycze: The Battle of Boratycze took place on September 14, 1939, during the Invasion of Poland.  Polish 24th Infantry Division, commanded by General Kazimierz Fabrycy, and supported by units of Border Protection Corps, clashed with German 2nd Mountain Division.  The battle took place near the village of , located between Przemysl and Lwow.

Battle of the Herrings: The Battle of the Herrings was a military action near the town of Rouvray in France, just north of Orléans, which took place on 12 February 1429 during the siege of Orléans.  The immediate cause of the battle was an attempt by French forces, led by Charles of Bourbon, Count of Clermont, to intercept and divert a supply convoy headed for English forces.  The English had been laying siege to the town of Orléans since the previous October.  The French were assisted by a Scottish force led by the Constable of the Scottish army, Sir John Stewart of Darnley.  There are two places called Rouvray in the region in question.  In his biography of Sir John Fastolf, Stephen Cooper gives reasons why the battle probably took place near Rouvray-Sainte-Croix, rather than Rouvray-Saint-Denis.

Battle of Lagarde: The Battle of Lagarde took place on June 17–18, 1940, during the German Invasion of France.  The Polish 1st Grenadiers Division, commanded by General Bronislaw Duch, clashed with units of German 12th Army Corps.  The battle took place near Lagarde, Moselle.

Battle of Green Spring: The Battle of Green Spring took place near Green Spring Plantation in James City County, Virginia during the American Revolutionary War.  On July 6, 1781 United States Brigadier General "Mad" Anthony Wayne, leading the advance forces of the Marquis de Lafayette, was ambushed near the plantation by the British army of Earl Charles Cornwallis in the last major land battle of the Virginia campaign prior to the Siege of Yorktown.

Supporting paragraphs: Busby, Montana Battle of the Rosebud
Answer: August