Robert Kenneth Strachan

Later in 1994, Strachan's son, Harry Strachan Jr., established the Strachan Foundation to honor his parents and grandparents.

By 1966, LAM fully expanded and was categorized as one of eight missions in the Interdenominational Foreign Mission Association of North America, Inc. and the Evangelical Foreign Missions Association.

Due to Strachan's poor health, Strachan concluded his missionary work and settled with his family in Pasadena, California. While living in Pasadena, Strachan lectured at Fuller Theological Seminary. He died from lymphoma in February 1965.

Eager to mobilize every believer, Strachan orchestrated Evangelism-in-Depth (EID). The four main objectives of EID centered around the responsibility Christians carry in fostering congregation and outreach. Moreover, the mission work of EID reflected what was called the “Strachan theorem”, which stated that “the expansion of any movement is in direct proportion to its success in mobilizing its total membership in continuous propagation of its beliefs.” To practice this, Strachan went door-to-door sharing the gospel, mailed invitations to EID meetings, painted banners around town, and dropped handbills from airplanes. Strachan launched EID in Nicaragua (1960) and Guatemala (1962). Ultimately, EID spread to the Caribbean and South America. EID pioneered a new strategy and program for missionaries; the movement underscored the role of the church and drew public attention to Christianity. To the current day, EID serves as a catalyst for other missionary groups in countries like India, Japan, the Philippines, and Africa.

In 1955, Strachan broadly defined the four main goals of LAM:

Throughout the course of his mission work around 1948, Strachan traveled to Colombia, Puerto Rico, Dominican Republic, Panama, Florida, Illinois, California, and New Jersey. Strachan began to gain more clarity in the direction that he wanted LAM to go, and traveled around for recruits, visited seminary graduates, and continued to write love letters to Elizabeth back at home.

In August 1942, the growing family moved to New Jersey so that Strachan could attend Princeton Theological Seminary. Strachan obtained a Master of Theology degree from Princeton Seminary in 1943, and immediately returned to LAM in Costa Rica without his family in 1944.

Strachan officially decided to enter LAM in 1936; at this time, his mother served as LAM's Co-Director. Following his brief studies at Princeton Seminary (in 1944), Strachan dedicates LAM as his full-time job. In April 1945, Strachan's father died, which lead to the natural promotion of Strachan as a fellow Co-Director of LAM with Susan.

In 1928, Strachan attended Wheaton College. During his undergraduate years, Strachan took a break to go back to Costa Rica, where he experienced tension and crisis while trying to live a life in complete surrender to God and contemplating continuing his parents’ work. After his break, Strachan finished his coursework at Wheaton in 1935. Subsequently, Strachan attended Evangelical Theological College in Dallas, TX; he graduated in 1936. The name of the mission that Strachan's parents were leading, in March 1939, changed its name from the Latin America Evangelism Campaign to the Latin America Mission (LAM). In the interim, Strachan pursued Elizabeth Walker. Walker was the daughter of a Baptist pastor that Strachan met in North Carolina while visiting his sister Grace. Strachan's courtship with Elizabeth was entirely by letter. In 1940, the couple got married at Columbia Bible College. Following their short honeymoon, they decided to begin their married life together in Costa Rica. Over the course of their marriage, Strachan and Walker had six children.

Robert Kenneth Strachan (1910–1965) was the first son to Harry and Susan Strachan, the founders of the Latin America Mission (LAM). In 1945, Strachan became a religious missionary and succeeded his father's position as co-director of LAM. As the director of LAM, Strachan inaugurated a new chapter of LAM that distinguished his role in the foundation from that of his parents’. Strachan launched the Evangelism-In-Depth initiative and established an unprecedented network of mission churches in Central and South America, specifically in Costa Rica and Nicaragua. Strachan was well known for his evangelism, spread of Christian education, and desire for missionaries to “latinamericanize".

Strachan was born in 1910 in Tandil, Argentina to parents Harry Strachan and Susan Beamish Strachan (who were on religious missions at the time). Strachan was the oldest of three kids; a brother to Harry Wallace (born in 1912) and Grace Eileen (born in 1913). Harry and Susan started their missionary work in Argentina from their marriage in 1903 to 1918. Subsequently, they moved to Costa Rica. As children of missionaries, Strachan and his siblings were often left with trusted Christian families in Costa Rica.