While it's easy to say that broader prosperity and deeper industrial development would facilitate the motorization, possibly the mechanization of European armies, the ensuing population increase might make W. Europe too densely populated for maneuver warfare. Think mile after mile of medium density row/terrace homes, streetcar suburbs, etc. with limited gaps between cities functioning as 'choke points'.
Another important question is how many theater size (Russo-Japanese war, Spanish Civil War) conflicts occur and what lessons the great powers derive from them.
Unlikely that housing and construction will 'urbanise' Europe to the point of making it a battlefield-unto-itself. Even today with all our ribbon development and so forth Europe has plenty of open spaces for manover warfare.
However the ensuing population increases will mean that the armies that be, will be of a scale much larger than they historically were, this means that there will be less room for manover warfare as the local troop front density will be higher, and their will be greater concentration on defense in depth. Deep penitration techniques such as the armoured schwerpunkt won't work because now the rear lines of armies are not just full of logistics troops, but also part of 2nd and perhaps even 3rd or 4th reserves because their won't be enough weapons to go round after mobilisation (or at least not enough after they work out the rate at which soliders expend those weapons).
This will change warfare techniques in mobile warfare to terms of multilayered tactical operations.
Because there will be the numbers of units to utlise, engagements won't be designed to create tactical sized holes in the enemies front, but instead designed to create operational level collaspes of the enemies front line, by continually switching the focus of the attack, so that the opponants reinforcements are left in continual flux.
The aim of which is to deny the opponant a portion of his large force, while you maximise your own.
The Schlliefen plan will likely go out the window as Europe enters the late 1910s and 1920s as the French and Russians will improve their infrastructure to be on a par with Germany's thus making the rapid mobilisation and attack plan more and more unlikely to work in attempting to quickly take Paris. Paris indeed will have enough local population even with emmigrations to warrent needing a couple of armies at the least to take...
This will be all coming at a time when the full implications of the machingun and modern rapid fire artillery will be coming to the forfront of stratergy, and so the 'industrial concept' of overlapping supported files of fire, large scale broad offensives conducted in multiple stages with specialist 'tools' units for dealing with the othersides 'specialist tools' will become a concept within a concept.
In essence your going to have attrition battle strategy mixing with combined arms.
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Caverly will likely still be around, but more reserved for rear guard work than silly charges or operations along those lines.