The Collaborative International Dictionary of English v.0.48:
Militancy \Mil"i*tan*cy\, n. [See Militant.] [1913 Webster] 1. The state of being militant; warfare. [1913 Webster] 2. A military spirit or system; militarism. --H. Spencer. [1913 Webster]WordNet (r) 3.0 (2006):
militancy n 1: a militant aggressiveness [syn: combativeness, militance, militancy]