Six.

This is coolbert:

Back in my day decades ago now it was the Big Five.

Five weapon systems allowing the U.S. Army to prevail in what was deemed the Air Land Battle 2000. As in year 2000.

Those five weapon systems prior to the year 2000: * Bradley * Abrams * MLRS * Patriot * Apache.

In the modern context and as reported by the Internet web site Breaking Defense we have a description of the Big Six.

"Army Moves $25B To Big Six, From New Tanks To 6.8mm Rifle"

Click on image to see an enlarged view.

"The Army plans to move at least $25 billion over the next five years from low-priority programs to preparing for major war. That includes developing a wide variety of new weapons, from high-speed aircraft, to partially-robotic armored vehicles, to a long-ranged 6.8 millimeter rifle to replace the venerable M16/M4 family and its controversial 5.56 mm round."

Further that Big Six to include:

"in order of importance — * long-range precision fires, aka missiles; * new armored vehicles; * new aircraft; * upgraded networks [electronic] that can withstand jamming and hacking; * improved anti-aircraft and missile defense; and, lastly, * individual equipment."

"PREPARING FOR A MAJOR WAR"!

"In time of peace prepare for war." - - Marcus Tullius Cicero.

coolbert.