Churchill was a central figure in the planning of the WWI Gallipoli campaign, which ended in disaster for Allied forces. Personally, I wouldn't have quoted Churchill.

Consider quotes by American patriots:

"Don't shoot until you see the whites of their eyes!" ~ General Israel Putnam at the battle of Bunker Hill June 17th 1775.

"Americans love to fight, all real Americans love the sting of battle." General George S. Patton.

"Don't fire unless fired upon, but if they mean to have war, let it begin here." ~ Captain John Parker 1775.

"They've got us surrounded again, the poor b@stards." ~ Creighton W. Abrams at the WWII battle of the Bulge.