Ancient Roman military maneuvers maniples (Manipulum)

[jkaler48]

But what kind of Latin?
There are no doubt many changes in the Latin used by 1st Century Legionary troops and that spoken in Middle ages churches to modern Latin. The common Latin evolved into several different
regional European Languages. Even English evolved so greatly over a much smaller time that earlier versions are hardly understandable by most people today. If I give commands in current English
to my 14th Century reenactors how close will it be?
As an example try reading this passage:
From The Canterbury Tales by Geoffrey Chaucer, 14th century:

Whan that Aprille with his shoures soote
The droghte of March hath perced to the roote
And bathed every veyne in swich licour,
Of which vertu engendred is the flour;
Whan Zephirus eek with his sweete breeth
Inspired hath in every holt and heeth
The tendre croppes, and the yonge sonne
Hath in the Ram his halfe cours yronne,
And smale foweles maken melodye,
That slepen al the nyght with open yë
(So priketh hem Nature in hir corages);
Than longen folk to goon on pilgrimages

And that's only seven centuries back not twenty!