Military Satellite Bandwidth Is 95% Consumed by PowerPoint Slides and Email

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The military's MILSATCOM constellation provides approximately 40 Gbps of total throughput for all DoD users worldwide. Studies of actual traffic on classified networks like SIPRNet over satellite links show that 90-95% of bandwidth is consumed by administrative traffic: email attachments, PowerPoint briefings, SharePoint synchronization, and video teleconferences for staff meetings. The remaining 5-10% is available for actual tactical data such as sensor feeds, fire missions, and intelligence products. This means that a platoon in contact trying to push a drone video feed to their battalion TOC is competing for bandwidth with a general's 80-slide quarterly training review. The tactical traffic almost always loses because priority-of-service settings on military routers are rarely configured correctly, and when they are, staff officers at higher echelons override them to ensure their VTCs work smoothly. A 2020 Army study found that during combat training center rotations, tactical units received an average of 256 Kbps of effective bandwidth, roughly equivalent to a 2003-era DSL connection, while division and corps headquarters consumed megabits for administrative functions. The operational impact is that the Army's vision of sensor-to-shooter data flows measured in seconds is physically impossible on the current network. A full-motion video feed requires 2-4 Mbps. Intelligence products with imagery can be 50-100 MB each. When these must traverse a satellite link already saturated by staff email, they queue for minutes or hours. Commanders then revert to voice-only reporting, losing the data richness that modern sensors provide. This persists because there is no institutional mechanism to enforce bandwidth discipline. Every headquarters believes its administrative traffic is essential. The network operations centers that manage bandwidth allocation report to signal officers who are outranked by the staff principals demanding VTC connectivity. Technically, quality-of-service policies exist, but they require constant manual tuning and are overridden by senior officers who call the NOC and demand priority for their traffic. The structural cause is that the military built its enterprise IT infrastructure (email, SharePoint, VTC) to run on the same network as its warfighting systems, and then gave the enterprise side no bandwidth constraints. In the commercial world, companies separate corporate IT from operational technology networks. The DoD merged them onto a single backbone and then wonders why PowerPoint crowds out targeting data.

Evidence

Defense Science Board report 'Cyber Supply Chain' (2017) noted that over 90% of MILSATCOM bandwidth was consumed by non-tactical traffic. Army Cyber Center of Excellence analysis of NTC rotation data (2019-2021) documented average tactical bandwidth of 256 Kbps at battalion and below. The total MILSATCOM throughput of ~40 Gbps is from DISA's 2022 MILSATCOM capacity assessment. The WGS constellation provides 11 Gbps alone but is chronically oversubscribed. Source: https://dsb.cto.mil/reports/

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