If we're going that route....
Then my first army was a Karn force for
Havok. My younger brother took the Nexus stuff.
Grimtuff wrote:First army I had resembling a legal force was a 2nd ed. Legion of the Damned army using their White Dwarf army list.
Before then I had a few random guys and/or used my friend's models on sunday beginners.
To expand on my previous answer as people seem to be posting lists.
A short while after going into
GW for the first time (after myself and my brother were directed there by the staff in Woolworths in search of more Havok models. Nice lead in there!

) the original
Legion of the Damned box was released. I fell in love with these guys almost instantly and their army list was released a month later in
WD.
I distinctly remember having that squad, a rhino, a Dreadnought attempted to have done like the one in
WD with a poor donated skeleton from some random board game on his banner. Various support models to make a devastator squad and a converted commander also made like the one in
WD. A conversion which 12 year old me attempted to thickly brush undercoat in
GW and the mananger, seeing what I was doing ran over and put it under the tap in the back room. After that he said if I did that again he'd get Jes Goodwin to kill me for what I did to his sculpt.
And that is the tale of Grimtuff's first
40k army.