Complex sentence: Grover was commissioned into the King's Shropshire Light Infantry in 1914 and was awarded the Military Cross for his service in World War I. He became Commanding Officer of the 1st Bn King's Shropshire Light Infantry in 1938.
Split into simpler sentences: Grover was commissioned into the King's Shropshire Light Infantry in 1914. Keane, Fergal p458 He became Commanding Officer of the 1st Bn King's Shropshire Light Infantry in 1938.