Dig trenches, shoot at each other for six days to gain three feet of land? I sure hope not.
That is not what they are doing. It would be a complete failure to assume they are attempting WWI era tactics. In reality, it is largely the proto-Warsaw Pact doctrine of WWII.
Where you move to the limit of effective range of the enemy, then dig in. This both is a great defensive posture in the event the other side conducts an attack, and is a base from which you mass your own strength. Then at the proper time you surge out and assault the other side. It may sound like WWI, but it really is not.
In WWI, most such advances were massive, often division sized units or larger advancing across a massive front. And with artillery that was much slower, shorter range, and less accurate than what is used in the modern era. In the modern doctrine, the assault will be kicked off with a massive artillery barrage. And the barrage will be across a wide front, both to reduce the enemy as well as maskirovka. But at least one key location in that barrage will be getting special attention and even even more thorough pounding. Generally a fairly small area, an area of the front that is covered by a Battalion, normally never more than a Regiment.
That is going to be the point of attack. Instead of advancing as a massive assault covering a mile or more of front, it will be a very small area that is attacked. With the intent being to break that location, then expand it so that the following units can break join and either roll up the flanks, or punch through to the rear and sweep behind other units. That was very different from WWI, where most engagements were Division or larger units, trying to route similar sized forces as an entire force.
The closest we had to that kind of fighting I can think of in the last half century was the Iran-Iraq War. In that war neither side had a very capable military, nor very much modern equipment. So they did indeed largely devolve to WWI era tactics. With human wave attacks being the standard by both sides. And almost laughingly, Iraq tried the same thing in 1991 and 2003, and was thoroughly trounced by coalition forces both times.