Original: History Early days ( 1993 -- 1996 ) HammerFall began when guitarist Oscar Dronjak quit Ceremonial Oath and invited Jesper Strömblad ( from In Flames , also formerly a member of Ceremonial Oath ) to join him as a drummer on a new musical project which he had been idealising for some time .
Simplified: History 1993-1996 HammerFall began when guitarist Oscar Dronjak quit Ceremonial Oath and invited Jesper Strömblad from In Flames to join him as a drummer on a new band he had been thinking about for a long time .