The order said the issue had been discussed with the army, air force and navy in May and July, and was aimed at supporting Prime Minister Narendra Modi's campaign to promote domestic goods. A defence ministry spokesman declined to comment.
The order did not specify which products would be targeted. However, industry sources said they believed imported liquor could be on the list.
Imports make up around 6-7 per cent of total sales value in the defence shops, according to an August research column of the government-funded Institute for Defence Studies and Analyses (IDSA). Chinese products such as diapers, vacuum cleaners, handbags and laptops, account for the bulk if it, it said.
Reuters reported in June that Pernod and Diageo had briefly stopped receiving orders for their imported brands from such government stores. Diageo did not respond to a request for comment, while a Pernod spokesman declined comment.
While imported liquor sales at defence stores generate only about $17 million in annual sales, the order would send a negative signal, said an executive whose company sells products at defence stores.
"The (foreign liquor) sales are small - but why would a government which is wanting to attract foreign investments do this? It's a confusing, conflicting signal," said the executive.
India has in recent months taken steps to curb Chinese businesses and investments following a border clash in June that killed 20 Indian soldiers.
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