"An eyewitness reported:

A mixed and motley multitude met the eye. They wore no uniforms, yet they presented a tolerably decent appearance, being dressed no doubt in their Sunday clothes, some better and some worse. The only thing in which they all concurred was the wearing of the green, almost every individual having a knot of ribbon of that colour, sometimes intermixed with yellow in his hat.

In their arms there was as great a diversity as in their dress. By far the majority of them had pikes, which were truly formidable instruments in close fight, but of no use in distant warfare ... others wore swords, generally of the least efficient kind, and some had merely pitchforks. James Thompson."

"Affairs of Ireland. The late Rebellion connected with remote Causes", The New Annual Register, Or, General Repository of History, Politics, and Literature for the Year 1798 (1799), pp. 162-199:
http://books.google.com/books?id=3NgvAAAAYAAJ&pg=PA162

Various report, etc.
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The Battle of Ballynahinch, 12.vi.1798:

http://en.wikipedia.org/wiki/Battle_of_Ballynahinch

http://irelandinhistory.blogspot.com/2012/06/13-june-1798-battle-of-ballynahinch-on.html

http://www.bbc.co.uk/northernireland/yourplaceandmine/down/bhinch_battle.shtml

http://www.ballynahinchharvestfestival.com/1798-rebellion.asp

Of possible interest, in the 2nd pagination: "Return of the killed, wounded, and missing, of the King's Forces at the Battle of Ballinamuck, September 8, 1798":
http://books.google.com/books?id=3NgvAAAAYAAJ&pg=RA1-PA117
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Watercolour plan (1798) by I. Hardy of the Battle of Ballinamuck in Co. Longford showing Position of the English & French Armies previous to the Surrender of the latter at Balinamuck ... 8th September 1798. 26 x 19.3 cm on sheet 30.3 x 23.7 cm. National Library of Ireland (PD HP (1798) 20).