Complex sentence: In October 1939, a month after the outbreak of the Second World War, Hawkesworth was given command of the 12th Infantry Brigade, part of the 4th Infantry Division, commanded by Major General Dudley Johnson.
Split into simpler sentences: In October 1939, a month after the outbreak of the Second World War, Hawkesworth was given command of the 12th Infantry Brigade. The brigade formed part of the 4th Infantry Division, then commanded by Major General Dudley Johnson.