There is an official website called Military Procurement Network, which publishes all the bidding and procurement information related to the army. This is also the most authoritative one. You can go to this platform to look for it first.

there is another platform, which I recommend for your reference. This kind of comprehensive platform has many industry classifications. You can enter "troops" to search for bidding information, depending on which region you choose. If you want to get information quickly, you can add a subscription, which will automatically send you information

Bidding Resource Network.