Note 137 — Chapter XCII · ASIATIC CAMPAIGNS OF ALEXANDER.
Reading edition
Arrian, i. 2, 8, 9 (where we also find mentioned τοὺς ἐκ τῆς ἄνωθεν Μακεδονίας ἱππέας), i. 12, 12; ii. 9, 6; iii. 11, 12.
About the ἱππεῖς σαρισσόφοροι, see i. 13, 1.
It is possible that there may have been sixteen squadrons of heavy cavalry, and eight squadrons of the Sarissophori,—each squadron from 180 to 250 men—as Rüstow and Köchly conceive (p. 243). But there is no sufficient evidence to prove it; nor can I think it safe to assume, as they do, that Alexander carried over with him to Asia just half of the Macedonian entire force.