There are already thousands of small relatively-low-latency comms satellites in orbit. And the US is launching tens-to-hundred every couple of weeks.
I think we need to delineate between internet service satellites and military satellites that broadcast in formats and frequencies that actually directly connect military platforms outside the internet altogether. However the SDA plans to orbit 126 military LEO satellites with laser cross links that utilize UHF and L band tactical links in ten scheduled launches next year (originally to start in September but delayed), along with 50+ missile detection satellites. 200+ more satellites are order for 2026-27 for Incr2.