What is "froggies"

Usage examples of "froggies".

They joked that the froggies were on the run now, that Johnny-Frenchman would not stand till he was past Paris, that this army would march on and on and on till every man jack in it had a Parisian girl on his elbow and a bag of gold in his hand, and the General, who would sometimes just sit on his horse and watch them pass, would feel his soul full of pride and love for these ranks that he led, that marched in such spirits to a battle that would leave some of them broken like bloody rag dolls on a Spanish field.