Noun
last full measure (plural last full measures)
(idiomatic) A person's life, when lost through death in service to a nation or cause, particularly as a member of a military force in war or a semi-militarized organization such as a police force or civil defense corps, e.g. fire departments. May also be applied to some dangerous government and civil occupations such as espionage.
Through their deeds, the dead of battle have spoken more eloquently for themselves than any of the living ever could. But we can only honor them by rededicating ourselves to the cause for which they gave a last full measure of devotion. Abraham Lincoln
It is rather for us here dedicated to the great task remaining before us, that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion. Abraham Lincoln