to be first, to begin with. GNT doesnt use it in this sense

Hekatont-arches

hekatontarches (G1543) - commander of one hundred, a Roman century (ten centuries made a cohort). Translated Centurion, equivalent to a company commander. from hekaton ("hundred") and archō

• Matthew 8:5,813 (CPT Marvel); 27:54 (Loginus)
• Luke 7:2,6 (CPT Marvel); 23:47 (Loginus)
• Acts 10:1, 22 (Cornelius); 21:32; 22:25,26; 23:17,23 (under Lysias); 24:23 (under Lysias); 27:1,6,11,31,43 (Julius)

Chili-archos

chiliarchos (G5506) - commander of one thousand, a Roman cohort (ten cohorts made a legion). Often translated Tribune, but was just the highest ranking centurion in a cohort, equivalent to a battalion commander. from chililoi, G5507 ("thousand") and archō

• Mark 6:21 "officers"
• John 18:12 "officer" *probably false, there's no way a tribune came to arrest Jesus. Maybe a centurion, John probably overstates the circumstances to prove a point.
• Acts 21:31, 32, 33, 37 (Lysias); 25:23 - "tribune/s"
• Revelation 6:15 "generals"; 19:18 "captains"