During our 40^th wedding anniversary trip to Europe this spring, my wife and I visited the underground bunker being restored by enthusiasts at Schoenenbourg, France.  This impressive fortification is one element in the defensive Maginot Line built after World War I to keep Germany from invading France ever again.

Named for French Minister of Defense Andre Maginot, the line was a 450-mile long series of bunkers, barriers, artillery casemates and passive impediments along the border between the two nations. The Schoenenbourg bunker is one of the few remaining vestiges of the earnest effort.

It housed more than 600 soldiers who lived 100 feet underground in a virtual city equipped to support them for months. Food, supplies and munitions moved through the mile long system on a rail network. Telephone communications connected outside spotters to inside decision makers. Redundant air pumps and filters kept the atmosphere belowground inhabitable.

There were 45 such bunkers in the line to provide live resistance to a potential invasion, along with 352 casemates and more passive barriers such as angled concrete pillars.

The Maginot Line represented a massive commitment by France even as it struggled to recover from devastating WWI. But the perceived threat of a restive Germany and centuries of cross border infiltrations and alliances merited the investment.

The problem was, the Maginot Line was built to defend against a past threat. It was built to stop infantry, open-air troop carriers and thin-skinned battle tanks of WWI experience.

When Germany invaded France in May 1940, they flew over the Maginot Line, rolled around the end of the line through Belgium and through a break in the line through the Ardennes, which Maginot deemed too impenetrable to require fortification. Germans blew past passive defenses with their fast and powerful Panzer tanks. In seven weeks they were in Paris and the French government had surrendered.

French intentions were right. Their execution was good. But they built to defend against issues and fears of the past without accounting for future threats that would be significantly different.

This is not an uncommon situation.

In current times, the music industry built a line against pirated CDs while online music distribution flew over the defense.

American automakers defended themselves against each other’s paltry products, while higher quality cars invaded from overseas.

Furniture factory owners in North Carolina defended themselves against unions and lower profits by clinging to antiquated production methods, while Chinese manufacturers built efficient new factories from scratch.

Are you crouching behind a Maginot Line at work, clinging to former processes, staffing and equipment, while competitors punch through your product line with better tools and innovation?

Is your church trying to defend itself from the perceived threat of its surrounding culture while young people who easily learn to navigate the culture are finding your bunker increasingly irrelevant?

Those who build to defend against a past threat will be overwhelmed easily by the real challenges of the future.