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Raja Lal Singh or Lal Singh Dogra was the commander of Sikh Khalsa Army forces during the First Anglo-Sikh War. Along with Tej Singh, Lal Singh betrayed the Sikhs during the course of the war. Lal Singh was regularly supplying information and even receiving instructions from British officers.
British battle records also state that Lal Singh betrayed his Sikh army. During the war, he had continuous correspondence with a British officer, Major Nicholson.