The military has a higher bitrate (and encrypted) signal, which leads to higher positional accuracy if you have the code. It's no less vulnerable to brute force

The military has a higher bitrate (and encrypted) signal, which leads to higher positional accuracy if you have the code. It's no less vulnerable to brute force jamming though, which is why military platforms typically solve this by having GPS receivers with high receive selectivity upwards and very low selectivity in the horizontal plane (where hostile platforms carrying jammers are likely to be). Source: studied weapons engineering in Naval College.