aramis erak
Legend
Nope, the buckler was never used for Archers , that is a fantasy and D&D concept not a historical one. The buckler was held by your hand, never strapped to your forearm. Do google search for buckler, for a real view of what a buckler really was.
Not entirely accurate. There are buckler sized shields with straps.
The buckler was often buckled on. Just not buckled to the arm. Many archers, and later, many fencers, carried one buckled to the belt. The buckle in question was on a strap which was fed through the handle.
Likewise, there is a shield traditionally used by archers from roman times onward: The Pavise. A tower shield with a kickstand. It was set, then used as a blind to fire from. Typically, it's about 4.5' to 5' tall...
Illustrations of Archers firing from behind pavises are on the Bayeux tapestry.
The problem is we don't know whether the couple of artifacts showing pre-classical earlier archers with small shields on the arm were artistic license or accurate, and the two illustrations I've seen were on pottery. Now, the greeks certainly had good imaginations, and put lots of fantasy art on their pottery.
And, it's possible with a small two-strap shield, with the hand strap close to an edge, to physically handle a bow in a manner which would allow shooting it. (My bow was stolen 3 moves ago, some 10 years ago, otherwise I'd dig out my targe and snap a photo.) The targe is also sometimes strapped to the forearm, to enable a stable hand on the dirk, as shown at http://dirkdance.tripod.com/id4.html; you can see that the knuckles are clear of the targe.