There is more than one artist with the name 'Counterstrike': But the only important one is the punk band that goes by that name from Houston, Tx.
1. COUNTERSTRIKE, also known as Animal Chin and 500 Mills, have been active drum 'n bass DJ's/producers since the mid Nineties. Collectively producing since 1998, they've had over 40 12" vinyl releases on various labels such as Rob Playford's Moving Shadow, Dieselboy's Human and Dylan's Obscene.
Algorythm Recordings, their own imprint, was launched in 2000 and include releases from artists such as Current Value, Limewax, SPL, T.Z.A, The Panacea and Donny. Apart from their busy production schedule they still find the time to regularly perform in Europe and the USA. 2009 saw them DJ in 17 countries.
2. Counterstrike is also a Polish heavy metal band from Bialystok, founded in 2006 by bassist/songwriter Przemyslaw Przytulo. Currently, the band has two active members (along with Maciej Rusiniak on guitar), relying on help of guest musicians and session members. Counterstrike is about to release an e-demo on Christmas 2006. More info on http://metalcs.t35.com.