Flags

semaphore

any of various types of signaling systems using flags, mechanical arms, etc. —semaphorist, n. —semaphoric, semaphorical, adj.

telelograph

a modified version of the semaphore, introduced at the end of the eighteenth century.

vexillary

a standard bearer.

vexillology

the study of flags and flag design. —vexillologist, n. —vexillological, adj.

vexillum

1. a military Standard or banner carried by ancient Roman troops.

2. the men serving under such a banner.