Weapon systems research is not easily available, but there are a number of links online if you know exactly what to search to find. Weapons always carry a deadly tone, but when you combine weapons with AI and other advanced technologies, we see the means of our own destruction.
Bottom Line: Recent weapons development has reignited an arms race and the weapons are terrifying in nature and prophetic in application.
HIVE Drone
Navy LOCUST
Rail Gun
Zumwalt Destroyer
Hyper-Sonic
Missiles
CHAMPS
Electro-magnetic EMP
Watch DARPA test out a swarm of drones
Early stage - unclassified release - Imagine 1,000 or more
https://www.theverge.com/2019/8/9/20799148/darpa-drones-robots-swarm-military-test
US Navy Zumwalt Destroyer with Electromagnetic Rail Gun
Deployed to 7th Fleet Pacific
https://www.foxnews.com/tech/navy-preps-stealthy-uss-zumwalt-for-new-lasers-missiles-and-guns
https://news.usni.org/2020/06/02/report-on-navy-laser-railgun-and-gun-launched-guided-projectiles-4
DoD Tests Hypersonic Missile at Mach 5 Speeds
Not Yet Deployed
US Deploys CHAMP High Speed Electromagnetic EMP
20 Missiles Deployed with North Korea as Potential Target