These signs of disaffection were followed by the refusal of some of the troopers of the 3rd Light Cavalry to receive their cartridges, although the commanding officer carefully explained to them that they were not the new cartridges, but the very same they had always used, and that according to the new drill they were not required to bite them when loading their carbines.
A Court of Inquiry was held to investigate the matter, composed entirely of Native officers, three of whom belonged to the offending regiment.

The verdict of the Court was that no adequate cause could be assigned for the disobedience of orders in refusing to receive and use the cartridges that were served out.

'The only conclusion the Court can arrive at in regard to this point is that a report seems to have got abroad which in some vague form attaches suspicion of impurity to the materials used for making these cartridges, but the Court are unanimously of opinion that there is nothing whatever objectionable in the cartridges of the 3rd Regiment Light Cavalry, and that they may be freely received and used as heretofore without in the slightest degree affecting any religious scruple of either a Hindu or Mussulman, and if any pretence contrary to that is urged, that it must be false.' This opinion, it must be remembered, was the opinion of Natives, not Europeans, and was given only sixteen days before the outbreak occurred at Meerut.
After carefully reviewing the evidence brought before the Court, and considering the opinion expressed by the Native officers who composed it, the Commander-in-Chief decided to try the eighty-five men who had refused to receive the cartridges by a General Court-Martial composed entirely of their own countrymen.

The Court was formed of six Mahomedans and nine Hindus, six Native officers being brought over from Delhi for the purpose.
The prisoners were tried on the 8th May, found guilty, and sentenced to imprisonment with hard labour for ten years.
The following morning there was a parade of the whole of the Meerut garrison, and the finding and sentence of the Court were read to the men.

The eighty-five troopers were then stripped of their uniform and fetters were fastened on their ankles.