Ya with no supplies ..we were able to move in and sustain two divisions into the sector.
Initially(early june) ..Pakistan was able to maintain sporadic fire on a tiny section of NH1D.
After Indian guns moved in, Pakistani positions were under intense pressure...Indian arty fire was so intense that any Pakistani infiltrator caught outside his 'sangar'(during one of the barrages)..would simply loose his head( due the intense pressure created by 155 mm air burst.)
PS: Indian supply route to Leh was never in danger.. for those who do not know, there exists a secondary route via HP ..Leh-Manali highway.