'Fellow soldier' in the Bible

But I thought it necessary to send to you Epaphroditus, my brother and fellow-laborer and fellow-soldier, and apostle and the minister of my necessity;

Aristarchus my fellow-soldier salutes you, and Mark the cousin of Barnabas concerning whom you received commandments; if he may come to you, receive him;

and to sister Apphia, and Archippus our fellow-soldier, and the church in your house.

Epaphras, my fellow-soldier in Christ Jesus;