reserve

What about the tartan 'trews?

The tartan trousers makes them lowlanders. Highlanders all had kilts. Hat man appears to be antipodean - I don't think anyone else got a slouch hat. He also appears to be wearing cavalry trousers. Puttees were gone by 1940.

Are you sure it's not just some gang of lads living rough and dressed in army surplus?

derangedlemur If you look at the linked set, you'll see a load of tents and horses, all military style.

derangedlemur Very sure! Have a look at the other photos in the series, especially this one which looks like a cavalry detachment.

Go NAVY!

According to the El Paso herald., February 02, 1917, HOME EDITION, Page 10, col. 2, "The GOSSIP CORNER", a new junior naval reserve school, aka John Paul Jones naval school, opened on January 30, 1917 in Corpus Christi chroniclingamerica.loc.gov/lccn/sn88084272/1917-02-02/ed-... S. also Corpus Christi caller and daily herald., January 15, 1917, Page PAGE THREE chroniclingamerica.loc.gov/lccn/sn86088527/1917-01-15/ed-...

Another school of naval reserves was in New York, the Sunday Oregonian, June 03, 1917, SECTION FIVE, Image 68, col. 1 reported that "A SCHOOL ff Naval Reserves has been established in New York where those who have enlisted In that body may study practical navigation and chartreading. Classes of 15 meet three times a week in the Mc Creery building." oregonnews.uoregon.edu/lccn/sn83045782/1917-06-03/ed-1/se...

As I recall from comments at the image below, the helmet with a ball on top is Artillery. There was an Artillery Barracks in Waterford (now gone) and in this 25" map, I see a passage with steps which matches, at the NE side of the Eastern corner of the barracks buildings, at the spot now occupied by St. Carthage's Avenue.

This has to before 1922, and probably before 1914, too.

Stripped button down collar shirt, very cool.

Could they belong to the Royal Munster Fusiliers? The ball-and-flame collar badge on both uniforms is very like that of the RMF (and also like that of the Royal Inniskilling Fusiliers and that of the Grenadier Guards)... They're like the one used by the Royal Artillery too, but they lack the 'UBIQUE' banner at the base.

No... having looked at the buttons and helmet more closely, they clearly belong to the Royal Artillery