R.O.T.C.

or ROTC

[ahr-oh-tee-see, rot-see]
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Word Origin and History for r.o.t.c.

R.O.T.C.

also ROTC, 1916, American English, initialism for Reserve Officers' Training Corps, established as part of the National Defense Act of 1916.

Online Etymology Dictionary, © 2010 Douglas Harper