The tune to for "Sergeant Flynn" (the lyrics posted way early by Wolfgang Hell in Mar 98) that I have heard is the same as used for "If You're Happy and You Know It." (Which is in ling with what Tom Collins posted in Jun 03) I don't know if that children's song uses the tune of an ealier air, but that's how I've heard the song sung. (I'm an officer in the 7th Cavalry). We rarely sing the words to "Garryowen", just play the music at all our events and parades. There are two sets of words I've seen, one the Irish air, the other written by a bandmaster of the Regiment.

The 1st Cavalry Division also uses the tune "Garryowen" as its Division melody.

The 3rd ID still sings "Dog Faced Soldier" (posted earlier also) each morning before physical training,

As side note, the Troopers of A/3-7 Cav plan on rigging a sound system in our forward operating base upon our return to Iraq so we can be serenaded by "Garryowen" each morning.

Garryowen and the Seventh First