Rashi

He crouches, he bows down So is the habit of the lurker; he crouches and lowers [himself] and makes himself small in order to be inconspicuous. and an army of broken people fall by his signals Heb. חלכאם, an army of broken people. I saw in the great masorah that חלכאים is one of fifteen words that are written as one word and read as two words, as is בגד in the verse (Gen. 30:11) commencing “And Leah said.” Also (in Deut. 33:2), “a fiery Law (אשדת) is to them”; (Isa. 3: 15), “What do you mean (מלכם) that you crush My people?” Also this word means חל כאים, an army of broken people. כאים is an expression of (below 109:16) “and a broken-hearted one (ונכאה לבב) to kill.” If you say that the “nun” is the radical, (Ezek. 13:22) “Because you have broken (הכאות) the heart of the righteous” will prove that [it is not]. We learn that the “nun” of נראה is like the “nun” of (I Sam. 15:9) נמבזה and the “nun” of (Jer. 6:14) נקלה, and so is its interpretation: and...fall by the signals of this wicked man, with his hints and his winks, an expression of (Isa. 41:21) “present your signals (עצמותיכם).” and (ibid. 33:15) “and closes (ועצם) his eyes,” an army of poor people. Another explanation: בעצומיו, by his mighty men. Said Rabbi Simon: This wicked man puts into his “callirus,” meaning army, only mighty men like himself, as it is said (in Dan. 3:20): “And he commanded the mighty warriors who were in his army to bind Shadrach, Meshach and Abed- nego” (Mid. Ps. 10:5). However, Menachem, (p. 89) interprets חלכאים as “poor and weak (וחלך),” the “chaf” being a radical.