Original: In December 1915 Mallory joined the Royal Garrison Artillery as 2nd lieutenant and in 1916 participated in the shelling of the Somme, under the command of Major Gwilym Lloyd George, the son of then Prime Minister David Lloyd George.
Simplified: In December 1915 Mallory joined the Royal Garrison Artillery as 2nd lieutenant and in 1916 participated in the shelling of the Somme, under the command of Major Gwilym Lloyd George, who was son of then Prime Minister David Lloyd George.