reyse
Reyse (verb) means to take part in a military campaign.
Etymology
Came from Middle English reysen (“to travel, journey, go on a military expedition”), probably from Middle Dutch reisen, resen (compare Old English rāsian (“to explore”)), which ultimately go back to Proto-West Germanic *raisōn (“to set out, depart, journey”). It is cognate with Danish rejse (“to travel”), Dutch reizen (“to travel”), German reisen (“to travel”), Norwegian reise (“to travel”) and Swedish resa (“to travel”). See also reys.