02Pilot said:
In reply to Noddaz :
It's not that easy to destroy a rail line. They are pretty resilient, and it takes damage to long stretches for it to be significantly problematic. Aside from capture, the only successful anti-railway efforts have required quite a bit of effort to achieve results, with Sherman's 1864 Atlanta campaign and T.E. Lawrence's Arab Revolt being the standout successes. By contrast, Allied bombing of German railroads during WWII was notoriously ineffective, in spite of the massive tonnage expended on marshalling yards and other key points.
As an interesting supplement to this. As I remember, the analysis of the bombing campaign in Germany came to the general conclusion that the attacks on industry where far less effective than expected (quick to repair and easy to disperse in many cases). One of the conclusions was that if they Allies had concentrated on the German rail network, they would have had a much larger effect on industry.
Of course, the devil is in the details. Hitting rail lines with (WWII) strategic bombers from 20,000 ft is almost impossible. The Bielefeld Viaduct (mid 1944) is a prime example of this. Here are some highlights:
Following D-Day in June 1944 the attacks against the viaduct began in earnest and for several months B-17 and B-24s of the US Eighth Airforce tried to destroy the viaduct. Their 250kg and 500kg bombs did little except turn the surrounding landscape into a crater land.
On February 22nd the weather was better and 617 Squadron dropped 18 Tallboys on the viaduct. Although the crews thought they had achieved one hit this was not the case. The track away from the viaduct had been badly damaged but the Organisation Todt quickly repaired the damage.
The tallboy BTW is a 12,ooo lb bomb!
The next move of course.... use a bigger bomb... the 22,000lb Grand Slam! The results can be seen below. It's also pretty obvious where the Tallboys fell!
If you want to read a more complete coverage of the story:
https://www.militaryhistories.co.uk/viaduct/damage
Oh, and in case you are wondering, that viaduct (minus the obviously removed part shown above) is STILL in existence: