▁fought ▁in ▁Afghan istan " ▁on ▁the ▁side ▁of ▁the ▁Tal ib an . ▁Peter ▁Tom sen ▁stated ▁that ▁up ▁until ▁ 9 / 1 1 ▁Pak ist ani ▁military ▁and ▁I SI ▁officers ▁along ▁with ▁thousands ▁of ▁regular ▁Pak ist ani ▁Ar med ▁Forces ▁personnel ▁had ▁been ▁involved ▁in ▁the ▁fighting ▁in ▁Afghan istan . ▁ ▁In ▁ 2 0 0 1 ▁alone , ▁according ▁to ▁several ▁international ▁sources , ▁ 2 8 , 0 0 0 – 3 0 , 0 0 0 ▁Pak ist ani ▁national s , ▁ 1 4 , 0 0 0 – 1 5 , 0 0 0 ▁Afghan ▁Tal ib an ▁and ▁ 2 , 0 0 0 – 3 , 0 0 0 ▁Al ▁Q a eda ▁milit ants ▁were ▁fighting ▁against ▁anti - T al ib an ▁forces ▁in ▁Afghan istan ▁as ▁a ▁roughly ▁ 4 5 , 0 0 0 - strong ▁military ▁force . ▁Pak ist ani ▁President ▁Per vez ▁M ush ar raf   – ▁then ▁as ▁Chief ▁of ▁Army ▁Staff   – ▁was ▁responsible ▁for ▁sending ▁thousands ▁of ▁Pakistan is ▁to ▁fight ▁alongside ▁the ▁Tal ib an ▁and ▁Bin ▁L aden ▁against ▁the ▁forces ▁of ▁A hm ad ▁Shah ▁Mass oud . ▁Of ▁the ▁estimated ▁ 2 8 , 0 0 0 ▁Pak ist ani ▁national s ▁fighting ▁in ▁Afghan istan , ▁ 8 , 0 0 0 ▁were ▁milit ants ▁rec ru ited ▁in ▁m adr ass as ▁filling ▁regular ▁Tal ib an ▁ranks . ▁A ▁ 1