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Rule 1 Ventures is a venture firm that strategically invests in early-stage aerospace and defense companies. It specifically targets enterprises developing technologies poised to shape and secure the future battlefield, providing both capital and profound operational expertise to its portfolio. The firm focuses on identifying nascent innovations that offer critical advancements in national security capabilities.
The firm was established by James A. Winnefeld Jr. and Todd Ehrlich, bringing together formidable experience from national security leadership. Winnefeld Jr., a retired four-star admiral, previously served as Vice Chairman of the Joint Chiefs of Staff, while Ehrlich is a former U.S. Navy SEAL and seasoned defense entrepreneur. Their combined insight recognized a critical gap in fostering early-stage defense technology, leading them to form an investment vehicle that deeply understands military operational needs.
Rule 1 Ventures partners with founders building crucial technologies, aiding in their development and market integration within the defense sector. The firm’s vision extends to ensuring the technological superiority of national defense by backing companies that develop groundbreaking solutions. It aims to cultivate a robust ecosystem of innovation that directly contributes to the definition and future dominance of the battlefield.
Key people at Rule 1 Ventures.
Rule 1 Ventures was founded in 2019 by Todd Ehrlich (Co-Founder, CEO and General Partner).
Key people at Rule 1 Ventures.
Rule 1 Ventures has 1 tracked investment across 1 company. The latest tracked deal is $10.0M Seed in Mantis Space in March 2026.
| Date | Company | Round | Lead Investor(s) | Co-Investor(s) |
|---|---|---|---|---|
| Mar 12, 2026 | Mantis Space | $10.0M Seed | Montauk Climate, Rule 1 Ventures | — |
Rule 1 Ventures was founded in 2019 by Todd Ehrlich (Co-Founder, CEO and General Partner).