rearguard
🇺🇸
/ˈrɪrɡɑːrd/
🇬🇧
/ˈrɪəɡɑːd/
A group of people who protect others from behind, especially during a retreat.
The rearguard soldiers fought bravely to protect their comrades as they retreated from the battlefield.
后卫部队勇敢地战斗,以保护他们的同志们在从战场撤退时的安全。