ümitsiz girişim

listen to the pronunciation of ümitsiz girişim
Турецкий язык - Английский Язык
forlorn hope
A small troop picked to make an advance attack, or the first attack; a storming party

Lieutenant Templeton of the 76th offered to lead the forlorn hope.

Any dangerous or hopeless venture
a hopeless or desperate enterprise
desperate or perilous undertaking; vain hope; group of soldiers selected to perform a dangerous mission