(in a military operation) the troops and officers in a combat zone or in a position to engage the enemy.
“Spring Forward, Fall Back” And Other Memory Tricks You’ve Probably ForgottenMnemonics (named after the Greek goddess of memory) are tricky little linguistic devices used to remember something ... and great mnemonics never go out of fashion. Let's take a look at a few.
Compare rear echelon.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019