D.S.O. Distinguished Service Order. Another piece of metal issued to officers for being brave. Tommy says it is mostly won in dugouts and calls it a "Dugout Service Order."

Dubbin. A grease for boots.

Dud. A German shell or bomb which has not exploded on account of a defective fuse. Tommy is a great souvenir collector so he gathers these "duds." Sometimes when he tries to unscrew the nose-cap it sticks. Then in his hurry to confiscate it before an officer appears he doesn't hammer it just right-and the printer of the casualty list has to use a little more type.

Dugout. A deep hole in the trenches dug by the Royal Engineer Corps; supposed to be shell proof. It is, until a shell hits it. Rat and Tommy find it an excellent habitation in which to contract rheumatism.

Dump. An uncovered spot where trench tools and supplies are placed. It is uncovered so that these will become rusty and worthless from the elements. This so that the contractors at home won't starve.

"Du pan." Tommy's French for bread.

E

Efficiency Pay. Extra pay allowed by the Government for long service. Tommy is very efficient if he manages to get it from the Government.

Eighteen-Pounder. One of our guns which fires an eighteen pound shell, used for destroying German barbed wire previous to an attack. If it does its duty you bet Tommy is grateful to the eighteen-pounders.

Elephant Dugout. A large, safe, and roomy dugout, braced by heavy steel ribs or girders.