I measured the figures this morning, out of curiosity, to see how tall they were.
The marching musketeer is 30mm from the bottom of his base to where his tricorn meets his head. To the top of his pom-pom, I get 35mm. To the tip of his bayonet (vertical for the marching pose), I get 48mm.
The marching grenadier is 30mm, 39mm, and 48mm respectively.
The standard bearer is 25mm for the first measurement, and 27mm to the top of his tricorn (no pom-pom).