Since the Russian invasion of Ukraine in 2022, the front has been mutating with all kinds of tactics who sought to wear down the enemy. The arrival of drones everything has changedbut the strategies and ingenuity In the use of artillery they have remained a fundamental asset for the advance or defense of the front. For this reason, Ukraine’s latest strategy has disconcerted the Russians. When they reach the bunkers there is no one, and then the surprise comes. Win by letting in. Ukraine is applying a more flexible and lethal defense consisting in “pre-register” their artillery on their own front-line positions, so that when the Russians assault and capture them, they literally enter an already calibrated point to be destroyed: the fort falls, the enemy concentrates, and then comes the massive punishment that turns Russian success into a death trap. After that blow, a Ukrainian assault branch recover the points again devastated, closing a cycle that maximizes ranged damage and reduces the exposure of own infantry, something key in a context of growing shortage of trained soldiers. This logic, denounced even by pro-Russian voices as the strategy of “letting in” is actually a way of imposing the pace: it is not about always preventing them from advancing, but about making each advance expensive, slow and bloody. The “death zone” as doctrine. The tactic works because the battlefield has become in a “kill zone” permanent where the defender attempts to maintain a deadly gap between the leading edge and the rear: artillery is placed further back, out of the usual range of rival drones, and forward positions are fortified to attract attackswaiting for the enemy to enter to destroy them right there with fire and drones. The drone operators They not only strike at the front, they also hunt for supply and reinforcement routes, and any activity near “newly taken” positions becomes visible and attackable. Added to this is the constant mining (including remote) and the use of “ambushers” in the few possible logistical axes, so that the attacker not only pays to capture, but also pays twice as much to try to consolidate. The “let in” tactic after pre-registering a position The decisive blow. The most surprising point about this approach is that the defender does not seek so much to “hold every meter” as to prevent the attacker deploy your second step– When the advancing force attempts to bring in specialized reinforcements (e.g. drone operators to hold the ground), the defender launches fast local offensiveseven if they cost material, to keep the death zone intact and keep the enemy trapped in a space where they cannot settle. Thus, the advance exists on paper or in the drone image, but it becomes tactically sterile: you capture something and, before transforming it into a usable position, it becomes a slaughterhouse, like is described in sectors like Kupiansk. It is a war where “letting in” is not an extra: it is the moment in which the enemy advance stops being progress and becomes a loss. The psychological and moral consequence. These types of dynamics are eroding the offensive will because it forces us to choose between kilometers and livesespecially the “faces” of competent soldiers who know how to move in that death zone: It’s not just that advancement costs, it’s that it costs exactly the most valuable thing. From this arises a dilemma on the front itself: advancing in a big way without preparation means burn trained unitsbut advancing “minimally” or little to be able to report presence saves resources… at the cost of generating absurd situations where you can no longer request fire on positions that officially “they are yours”although in reality they are being crushed or disputed. In this framework, the information war of territorial control is mixed with real survival, and “progress” becomes a very diffuse decision. The technological revolution to the rescue. we have been counting. The bottom line is that Ukraine is at the center of a military transformation: soldiers are the most expensive and difficult resource to replace, while unmanned systems have passed to dominate the combatexpanding on an industrial scale, lowering costs and multiplying impact. The front is increasingly managed from the rear or bunkers with operators controlling the space, and attempts at “classic” breaches become almost suicidal: the key is no longer to launch columns, but to disperse, camouflage and gradually push the death zone back. As the war evolves into swarms, AI coordination and persistent attacks, the advantage is not having the most expensive weapon, but having thousands of cheap weaponsreliable communications networks and the ability to update systems non-stop. The coming war. Thus, the strategic decision moves to logistics and industry: cut off land routes, protect supplies, attack factorieslogistics centers and hidden commands, and do so with reusable media and unmanned is increasingly determining. Victories depend on producing drones en massesecure components, sustain communications Starlink type and dominate the cybernetic layer that can blind, uncoordinate or paralyze an entire front. That is why the strategy to “let in” It does not seem like an isolated trick, but rather a direct consequence of the new battlefield: if the first to enter dies, the one who waits and finishes with precision (with drones, mines, artillery and digital coordination) keeps the initiative even if it seems that is receding. Image | US Army Europe In Xataka | The video of the Russian soldier in Ukraine who ignores the bomb that just exploded on him has only two explanations. And one is science fiction In Xataka | The war in Ukraine has a new level of brutality. Russia calls it a “can opener” and turns recruits into detonators