The commitments were on an alliance-wide basis. The actual delivery fell at about the 85% level. General Jones said a week or two ago, “You have promised me 100%; you have delivered 85%; I want the remaining 15%.”
Can you mount operations at less than 100%? Of course you can. You can't do as much with 85% as you can with 100%, but you can certainly achieve the objectives over a specific area. In order to achieve all of the objectives, you need that 100% and possibly more, because you then have to deal with the flow of reinforcements to replace casualties. But you can go forward with less than 100%.