The phrase "army with which" is correct and usable in written English.
It can be used when referring to a specific army that is being discussed or mentioned in relation to an action or context.
Example: "The general spoke of the army with which he had fought many battles, emphasizing their bravery and resilience."
Alternatives: "army that" or "army I have".
Strelkov has in recent weeks turned his rhetorical fire on the Kremlin itself, even if he no longer has an army with which to back up his words.
To oppose the allied troops massing on the frontiers, Napoleon mustered an army with which he marched into Belgium and defeated the Prussians at Ligny on June 16 , 1815
Because of the place of his birth, Ennius was at home in three languages and had, as he put it, "three hearts": Oscan, his native tongue; Greek, in which he was educated; and Latin, the language of the army with which he served in the Second Punic War.
Darius therefore began raising a huge new army with which he meant to completely subjugate Greece.
The empire had a single, perfect and magnificent, but small army with which to tamp down an unruly world.
Darius then began raising a huge new army with which he meant to completely subjugate Greece; however, in 486 BC, his Egyptian subjects revolted, indefinitely postponing any Greek expedition.
The Afghan army convoy with which they were traveling came under fire from rocket-propelled grenades fired by Taliban militants, NPR said.
The Soviet authorities deported Begin to Siberia in 1940, but in 1941 he was released and joined the Polish army in exile, with which he went to Palestine in 1942.
At 26, on New Year's Eve 1947, she wrote a 2 30 a.m. entry in her journal: "My New Year's Eve Toast: to all the devils, lusts, passions, greeds, envies, loves, hates, strange desires, enemies ghostly and real, the army of memories, with which I do battle — may they never give me peace".
Alvaro Gonçalves of Stratus, a Brazilian private-equity firm, appears dismayed at the speed with which "armies" of global investment firms are arriving.
He even found praise for the efficacy with which the army trained its forces.
