Erit Altera Merces
Vincere pro patria, vel pulchra occumbere morte
Fortis amat: ramus quod monet iste duplex.

Here is the vocabulary:
sum - be, exist
alter - other, another
merces - pay, salary, reward
vinco - win, be victorious
pro - on behalf of
patria - fatherland, home
vel - or
pulcher - beautiful
occumbo - meet with death, fall
mors - death
fortis - strong; strong man
amo - love
ramus - branch
qui - who, which, that
moneo - warn, advise
iste - that, that one
duplex - two-fold, double